/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.iotdb.confignode.consensus.request.auth;

import org.apache.iotdb.commons.auth.AuthException;
import org.apache.iotdb.commons.utils.BasicStructureSerDeUtil;
import org.apache.iotdb.confignode.consensus.request.ConfigPhysicalPlan;
import org.apache.iotdb.confignode.consensus.request.ConfigPhysicalPlanType;
import org.apache.iotdb.tsfile.utils.ReadWriteIOUtils;

import java.io.DataOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.HashSet;
import java.util.List;
import java.util.Objects;
import java.util.Set;

public class AuthorPlan extends ConfigPhysicalPlan {

    private ConfigPhysicalPlanType authorType;
    private String roleName;
    private String password;
    private String newPassword;
    private Set<Integer> permissions;
    private List<String> nodeNameList;
    private String userName;

    public AuthorPlan(ConfigPhysicalPlanType type) {
        super(type);
        authorType = type;
    }

    /**
     * AuthorPlan Constructor.
     *
     * @param authorType   author type
     * @param userName     user name
     * @param roleName     role name
     * @param password     password
     * @param newPassword  new password
     * @param permissions  permissions
     * @param nodeNameList node name in Path structure
     * @throws AuthException Authentication Exception
     */
    public AuthorPlan(
            ConfigPhysicalPlanType authorType,
            String userName,
            String roleName,
            String password,
            String newPassword,
            Set<Integer> permissions,
            List<String> nodeNameList)
            throws AuthException {
        this(authorType);
        this.authorType = authorType;
        this.userName = userName;
        this.roleName = roleName;
        this.password = password;
        this.newPassword = newPassword;
        this.permissions = permissions;
        this.nodeNameList = nodeNameList;
    }

    public ConfigPhysicalPlanType getAuthorType() {
        return authorType;
    }

    public void setAuthorType(ConfigPhysicalPlanType authorType) {
        this.authorType = authorType;
    }

    public String getRoleName() {
        return roleName;
    }

    public void setRoleName(String roleName) {
        this.roleName = roleName;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public String getNewPassword() {
        return newPassword;
    }

    public void setNewPassword(String newPassword) {
        this.newPassword = newPassword;
    }

    public Set<Integer> getPermissions() {
        return permissions;
    }

    public void setPermissions(Set<Integer> permissions) {
        this.permissions = permissions;
    }

    public List<String> getNodeNameList() {
        return nodeNameList;
    }

    public void setNodeNameList(List<String> nodeNameList) {
        this.nodeNameList = nodeNameList;
    }

    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName;
    }

    @Override
    protected void serializeImpl(DataOutputStream stream) throws IOException {
        ReadWriteIOUtils.write(getPlanType(authorType), stream);
        BasicStructureSerDeUtil.write(userName, stream);
        BasicStructureSerDeUtil.write(roleName, stream);
        BasicStructureSerDeUtil.write(password, stream);
        BasicStructureSerDeUtil.write(newPassword, stream);
        if (permissions == null) {
            stream.write((byte) 0);
        } else {
            stream.write((byte) 1);
            stream.writeInt(permissions.size());
            for (int permission : permissions) {
                stream.writeInt(permission);
            }
        }
        BasicStructureSerDeUtil.write(nodeNameList, stream);
    }

    @Override
    protected void deserializeImpl(ByteBuffer buffer) {
        userName = BasicStructureSerDeUtil.readString(buffer);
        roleName = BasicStructureSerDeUtil.readString(buffer);
        password = BasicStructureSerDeUtil.readString(buffer);
        newPassword = BasicStructureSerDeUtil.readString(buffer);
        byte hasPermissions = buffer.get();
        if (hasPermissions == (byte) 0) {
            this.permissions = null;
        } else {
            int permissionsSize = buffer.getInt();
            this.permissions = new HashSet<>();
            for (int i = 0; i < permissionsSize; i++) {
                permissions.add(buffer.getInt());
            }
        }
        nodeNameList = BasicStructureSerDeUtil.readStringList(buffer);
    }

    private short getPlanType(ConfigPhysicalPlanType configPhysicalPlanType) {
        short type;
        switch (configPhysicalPlanType) {
            case CreateUser:
                type = ConfigPhysicalPlanType.CreateUser.getPlanType();
                break;
            case CreateRole:
                type = ConfigPhysicalPlanType.CreateRole.getPlanType();
                break;
            case DropUser:
                type = ConfigPhysicalPlanType.DropUser.getPlanType();
                break;
            case DropRole:
                type = ConfigPhysicalPlanType.DropRole.getPlanType();
                break;
            case GrantRole:
                type = ConfigPhysicalPlanType.GrantRole.getPlanType();
                break;
            case GrantUser:
                type = ConfigPhysicalPlanType.GrantUser.getPlanType();
                break;
            case GrantRoleToUser:
                type = ConfigPhysicalPlanType.GrantRoleToUser.getPlanType();
                break;
            case RevokeUser:
                type = ConfigPhysicalPlanType.RevokeUser.getPlanType();
                break;
            case RevokeRole:
                type = ConfigPhysicalPlanType.RevokeRole.getPlanType();
                break;
            case RevokeRoleFromUser:
                type = ConfigPhysicalPlanType.RevokeRoleFromUser.getPlanType();
                break;
            case UpdateUser:
                type = ConfigPhysicalPlanType.UpdateUser.getPlanType();
                break;
            case ListUser:
                type = ConfigPhysicalPlanType.ListUser.getPlanType();
                break;
            case ListRole:
                type = ConfigPhysicalPlanType.ListRole.getPlanType();
                break;
            case ListUserPrivilege:
                type = ConfigPhysicalPlanType.ListUserPrivilege.getPlanType();
                break;
            case ListRolePrivilege:
                type = ConfigPhysicalPlanType.ListRolePrivilege.getPlanType();
                break;
            case ListUserRoles:
                type = ConfigPhysicalPlanType.ListUserRoles.getPlanType();
                break;
            case ListRoleUsers:
                type = ConfigPhysicalPlanType.ListRoleUsers.getPlanType();
                break;
            default:
                throw new IllegalArgumentException("Unknown operator: " + configPhysicalPlanType);
        }
        return type;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        AuthorPlan that = (AuthorPlan) o;
        return Objects.equals(authorType, that.authorType)
                && Objects.equals(userName, that.userName)
                && Objects.equals(roleName, that.roleName)
                && Objects.equals(password, that.password)
                && Objects.equals(newPassword, that.newPassword)
                && Objects.equals(permissions, that.permissions)
                && Objects.equals(nodeNameList, that.nodeNameList);
    }

    @Override
    public int hashCode() {
        return Objects.hash(
                authorType, userName, roleName, password, newPassword, permissions, nodeNameList);
    }
}
